Radiant heat can pass through which of the following materials?

Radiant heat is a form of energy that travels in the form of electromagnetic waves. It is not dependent on material conduction or convection; rather, it can be transmitted through certain materials based on their physical properties. Transparent glass is the correct choice because it allows these electromagnetic waves to pass through with minimal absorption, thereby permitting radiant heat to transfer through it effectively.

In contrast, opaque materials do not allow radiant heat to travel through at all; instead, they absorb and reflect most of the thermal energy. Translucent materials may limit the amount of radiant heat that can pass through, often scattering the energy and allowing only a portion to transmit, but they do not allow as much heat transfer as transparent materials. Therefore, while opaque and translucent materials interact with radiant heat differently, transparent glass is the most effective medium for allowing radiant heat to pass through unimpeded.